class Error(Exception): __str__ = Exception.__repr__


class InvalidPath(Error): pass
class NoEntity(Error): pass
class IOError(Error): pass
class NotDirectory: pass
class InvalidSuperblock(Error): pass
class BadFileHandle(Error): pass
class NoSpace(Error): pass
class NameTooLong(Error): pass
class NotEmpty(Error): pass
class NameExists(Error): pass
